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MissTica
4 years ago
10

Know how you would determine the percent yield of a reaction if you have the given amount of the reactants and the amount of the

product actually collected in the lab.
Chemistry
1 answer:
Over [174]4 years ago
5 0
First, use the given amount of reactants to calculate the theoretical amount of products that should be formed based on stoichiometry. Next, divide the actual amount of obtained product by that theoretical amount, and multiply by 100%. This gives the percent yield of the reaction.
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Which species has the shortest carbon-nitrogen bond, CH3CN, CH3NH2, or CH2NH? acetonitrile methylamine methanimine (c) Which spe
Arturiano [62]

Answer:

Shortest carbon-nitrogen bond = CH3CN, strongest carbon-nitrogen bond = CH3CN

Explanation:

Bond length is defined as the distance between the centers of two covalently bonded atoms, in this case; carbon and hydrogen.

The length of the bond is determined by the number of bonded electrons (the bond order).

The higher the bond order, the stronger the pull between the two atoms and the shorter the bond length.  

Therefore, bond length increases in the following order: triple bond < double bond < single bond.

CH3CN - There's a triple bond between Carbon and Nitrogen

CH3NH2 - The bond between carbon and nitrogen is a single bond.

CH2NH - The bond between carbon and nitrogen is a double bond.

The specie with the shortest carbon-nitrogen bond is CH3CN (acetonitrile).

The species with the strongest carbon-nitrogen bond is also CH3CN (acetonitrile) because it contains a triple bond. A triple bond contains one sigma and 2 pi bonds. The energy required to break it is more when compared to the other bonds hence, it is the strongest bond.

6 0
3 years ago
True or False (+2 Points Possible each): Write true if the statement is true. If false, replace
lesya [120]

Answer:

2. Molten rock rises in Earth's mantle caused by (pressure)

Explanation:

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4 0
3 years ago
How many moles of gas would occupy a 25.0 liter when the temp is 22.0 degrees celsius and the pressure is 646 torr
Luda [366]

Answer:

0.877 mol  

Step-by-step explanation:

We can use the<em> Ideal Gas Law </em>to solve this problem.

pV = nRT     Divide both sides by RT

 n = (pV)/(RT)

Data:

p = 646 torr

V = 25.0 L

R = 0.082 06 L·atm·K⁻¹mol⁻¹

T = 22.0 °C

Calculations:

(a) <em>Convert the pressure to atmospheres </em>

p = 646 torr × (1 atm/760 torr) = 0.8500 atm

(b) <em>Convert the temperature to kelvins </em>

T = (22.0 + 273.15) K = 295.15 K

(c) <em>Calculate the number of moles </em>

n = (0.8500 × 25.0)/(0.082 06 × 295.15)

  = 0.877 mol

3 0
3 years ago
Which part of an experiment has the same results every time
Savatey [412]

Answer:

a Control Variable in an experiment remains the same.

8 0
3 years ago
What is the volume, in liters, of 5.500 mol of C3H3 gas at STP
ZanzabumX [31]

Answer:

123.2 Liters.

Explanation:

At STP (T = 273K & P = 1atm)<em>, one mol of any gas will occupy 22.4 liters</em>.

With the above information in mind, we can <u>calculate how many liters would 5.500 mol of gas occupy</u>:

5.500 mol * 22.4 L / mol = 123.2 L

So 5.500 moles of C₃H₃ would have a volume of 123.2 liters at STP.

8 0
3 years ago
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